Product Name Huawei PVMD Part Number PVMD Manufacturer HUAWEI Application BSC Condition New Overview The PVMD board is a packet voice processing board. It manages the narrowband service boards and processes the V5, SIP/H.248, and PV8+ protocols. The PVMD board has the following functions: Transmits the time division multiplexing (TDM) voice signals to the local exchange (LE) through the V5 interface. Encapsulates the TDM voice signals into IP packets and then transmit the packets upstream to the softswitch through the fast Ethernet (FE) port or the gigabit Ethernet (GE) port. The PVMD board works with the EDTB board to implement cascading of PV8 subracks (for example, HCB, HDB, HIB, HFB, HGB, HMB, HLB, HUBT, HUBM, HUBS, HUBE, HUBF, HUBB, HUBO, HUBL). Front panel of the PVMD board (electrical port) RUN ALM: running status LED Red on for 0.3s and off for 0.3s and then yellow on for 0.3s and off for 0.3s repeatedly The board is starting up. Green: on for 1s and off for 1s repeatedly The board works in the normal state. Yellow: on for 1s and off for 1s repeatedly The board generates an alarm the indication of which does not affect the services. ACT: active LED Green: on The board is active. Green: off The board is standby. The status of the optical port LEDs is as follows ACT: data status LED Yellow: blinking Data is being transmitted. Yellow: off No data is being transmitted. LINK: link status LED Green: on The link is normal, a connection is set up on the port. Green: off The link is abnormal, no connection is set up on the port. Port The ports on the PVMD board are located on the front panel and the corresponding transfer boards. Table 3-12 describes the ports on the PVMD board. Table 3-12 Ports of the PVMD board Port Function Position Connection RX0, TX0: GE optical port Functions as the transmit port and the receive port in the case of upstream through GE optical ports. RX0 is for receiving, and TX0 is for transmitting. Front panel Use the optical fiber to connect the port to the optical port of the upstream device. RX1, TX1: FE optical port Functions as the transmit port and the receive port in the case of upstream through FE optical ports. RX1 is for receiving, and TX1 is for transmitting. The port multiplexes port ETH1. Front panel Use the optical fiber to connect the port to the optical port of the upstream device. ETH1: 100 M Base-T service network port Functions as the IP uplink port. The port multiplexes the FE optical port. Front panel Use the network cable to connect the port to the network port of the upstream device. ETH0: 100 M Base-T service network port Reserved Front panel Unavailable ETH: 100 M Base-T maintenance network port Supports the version loading in the BIOS mode or the debugging channel check. Front panel Use the network cable to connect the port to the network port of the maintenance terminal. COM: RS-232 maintenance serial port Supports the local and remote maintenance. You can configure and manage the system in the command line interface (CLI) through software such as HyperTerminal. The default baud rate is 9600 bit/s. Front panel Use the local maintenance serial port cable to connect the port to the serial port of the maintenance terminal. Four E1 ports Connect subscribers or work as uplink ports. E1TF (front access shelf) Use the 75-ohm E1 Cable of PVMB-Front Access or 120-ohm E1 Cable of PVMB-Front Access to connect the port to the upstream device or subscriber device. HWCB (rear access shelf) Use the 75-ohm E1 Cable of PVMB-Rear Access or 120-ohm E1 Cable of PVMB-Rear Access to connect the port to the upstream device or subscriber device. HW port Connects to the subtended HABD shelf or the extended shelf, and provides upstream channels for the narrowband services. HWCF (front access shelf) Use the HW cable-front access to connect the port to the HWTF transfer board of the subtended HABD shelf or the extended shelf. Connects to the subtended HABA shelf, and provides upstream channels for the narrowband services. HWCB (rear access shelf) Use the HW cable-rear access to connect the port to the HWTB transfer board of the subtended HABA shelf
